4.6 Northstar
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Cadillac XLR Forum Discussion, 4.6 Northstar in Past Cadillac Vehicle Discussion; Anyone out there have a good approx bone stock wheel hp for this motor? For the 2004 or 2005. Thx!...
  1. #1
    Davidstan's Avatar
    Davidstan is offline Cadillac Owners Fanatic
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    4.6 Northstar

    Anyone out there have a good approx bone stock wheel hp for this motor? For the 2004 or 2005. Thx!

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  3. #2
    FrankT's Avatar
    FrankT is offline Cadillac Owners Enthusiast
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    Re: 4.6 Northstar

    David,
    I am assuming you are referring to the Supercharged N*?
    Currently there are 4 N* power plants, LD8 fwd 4.6L~275HP, L37fwd~300HP, LH2 rear wheel dr~305HP, and the LC3 Supercharged.

    If you would like additional info on the supercharged N*, then go the the tech section, AJ posted a Tech link article that good info on the gm superchargers.
    http://216.182.211.32/techlink/image...7e.html#story1



    Naturally Aspirated, compression ratio~10.5:1, 300 HP, 4.6L displacement, 93mm bore x 84mm stroke.

    Supercharged, compression ratio ~9.0:1, 4.4L displacement, 91mm bore x 84mm stroke,~ 445 HP.

    Is the above at the rear wheels?, I'm not sure, I'll post again when I find out.
    Frank

  4. #3
    dkozloski's Avatar
    dkozloski is online now Cadillac Owners 10000+ Posts
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    Re: 4.6 Northstar

    Quote Originally Posted by FrankT View Post
    David,
    I am assuming you are referring to the Supercharged N*?
    Currently there are 4 N* power plants, LD8 fwd 4.6L~275HP, L37fwd~300HP, LH2 rear wheel dr~305HP, and the LC3 Supercharged.

    If you would like additional info on the supercharged N*, then go the the tech section, AJ posted a Tech link article that good info on the gm superchargers.
    http://216.182.211.32/techlink/image...7e.html#story1



    Naturally Aspirated, compression ratio~10.5:1, 300 HP, 4.6L displacement, 93mm bore x 84mm stroke.

    Supercharged, compression ratio ~9.0:1, 4.4L displacement, 91mm bore x 84mm stroke,~ 445 HP.

    Is the above at the rear wheels?, I'm not sure, I'll post again when I find out.
    Frank
    LH2 is 320HP @6400RPM
    Don't mess with Binky Bear!


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